6 Oct 96 Superbird A obs

Ron Lee (ronlee@pcisys.net)
Sat, 1 Feb 1997 15:34:34 -0700 (MST)

Since obs of Superbird A have resumed, thought I would repost
one of my last obs to show what I believe is a discontinuity
in the flash pattern, ie, which portion of the satellite
generates the bright flash.

Ron Lee



On 6 Oct 96 Ut, I obtained some almost precise timings of the 
flashes.  Unfortunately, I had to set my watch to a computer set
time (from NIST), then mark a tape.  Reductions after the fact
were adjusted for tape speed vagaries.  Individual timings are
perhaps as good as 0.3 second due to this less than ideal setup.

Satellite was at about 12.5 degrees elevation.  Following times
are just for the bright flashes (selected ones provided- except as
noted).  All times are UT on 6 Oct 96 (Long 104.5614 W, lat 38.9478 N,
 elev 2073 M, time zone is MDT or UT - 6 hours).  Words to right of time
are my comments from tape recorder...sometimes changed to correct
stupid comments!

3:34:26.5  Missed some from previous set of bright flashes
3:34:49.9

3:35:13.3
3:35:36.7

3:36:00.0  Brightest yet
3:36:23.3
3:36:46.8  WOW.  nice and bright

in the minute or so starting at 3:37. the flashes were faint to invisible.
NOTE:  All flashes provided for a few minutes. Read following paragraph
for explanation.

3:38:08.7*  sort of bright
3:38:20.3   really bright
3:38:32.1*  equal brightness to before
3:38:43.8   Nice.  not as bright as 3:36 UT
3:38:55.4*  Bright

3:39:07.2   bright like 3:36
3:39:18.7*  bright
3:39:30.6   really bright
3:39:42.3*  really bright (like previous)
3:39:54.3

3:40:05.7*  Less bright than previous minute
3:40:18     Approximate..  bright
3:40:29.3*  bright
3:40:41.0
3:40:52.8*  brightness is less

3:41:15.9*  sort of bright
3:41:27.6   bright
3:41:39.3*  brighter than flash at 3:41:27.6, less than 3:36
3:41:51.1   getting faint

3:42:02.7   bright
3:42:26.0   now can see difference between bright and faint flashes
3:42:49.3   bright